Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 06-15-2022, 12:04 PM   #341 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,797
Thanks: 7,806
Thanked 8,618 Times in 7,097 Posts
Tuft testing tells the tale.

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Two wrongs don't make a right, but three lefts do.
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 06-15-2022, 01:27 PM   #342 (permalink)
Master EcoModder
 
Phase's Avatar
 
Join Date: Mar 2022
Location: oregon
Posts: 1,067

Black Bullet - '19 Hyundai Ioniq Hybrid Blue
Thanks: 1
Thanked 555 Times in 443 Posts
Quote:
Originally Posted by freebeard View Post
Tuft testing tells the tale.
Iíll do that this week. What speed is best for testing tufts? Donít feel like going out onto interstate
  Reply With Quote
The Following User Says Thank You to Phase For This Useful Post:
aerohead (06-16-2022)
Old 06-15-2022, 02:13 PM   #343 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,797
Thanks: 7,806
Thanked 8,618 Times in 7,097 Posts
Did you catch the alliteration?

25-250mph.

200ft circle in an empty parking lot?

The blistered front half is buried in turbulence anyway.

The back half could be extended into a tearing edge. See: Mercury Turnpike Cruiser


https://www.jalopyjournal.com/forum/...b-jpg.4458911/
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Two wrongs don't make a right, but three lefts do.
  Reply With Quote
Old 06-15-2022, 02:36 PM   #344 (permalink)
Master EcoModder
 
Phase's Avatar
 
Join Date: Mar 2022
Location: oregon
Posts: 1,067

Black Bullet - '19 Hyundai Ioniq Hybrid Blue
Thanks: 1
Thanked 555 Times in 443 Posts
Quote:
Originally Posted by freebeard View Post
Did you catch the alliteration?

25-250mph.

200ft circle in an empty parking lot?

The blistered front half is buried in turbulence anyway.

The back half could be extended into a tearing edge. See: Mercury Turnpike Cruiser


https://www.jalopyjournal.com/forum/...b-jpg.4458911/
thats a good idea about the back half trailing versus just addinng the rear flares at the end. ill do a few tape on tests to see how it looks. i have some foam black board strips i was going to tape on the trailing edge to help as a strong separation edge. should make it look a little sporty too
  Reply With Quote
The Following User Says Thank You to Phase For This Useful Post:
freebeard (06-15-2022)
Old 06-16-2022, 10:13 AM   #345 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,922
Thanks: 24,011
Thanked 7,230 Times in 4,656 Posts
speed

Quote:
Originally Posted by Phase View Post
Iíll do that this week. What speed is best for testing tufts? Donít feel like going out onto interstate
You need at least 20-mph.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
Old 06-16-2022, 10:18 AM   #346 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,922
Thanks: 24,011
Thanked 7,230 Times in 4,656 Posts
rear edge

Quote:
Originally Posted by Phase View Post
thats a good idea about the back half trailing versus just addinng the rear flares at the end. ill do a few tape on tests to see how it looks. i have some foam black board strips i was going to tape on the trailing edge to help as a strong separation edge. should make it look a little sporty too
Bear in mind that, the end of the wheels skirt is the 'beginning' of your box cavity geometry.
Don't do anything to complicate or compromise the future 'onset' flow there.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
Old 06-16-2022, 01:35 PM   #347 (permalink)
Master EcoModder
 
Phase's Avatar
 
Join Date: Mar 2022
Location: oregon
Posts: 1,067

Black Bullet - '19 Hyundai Ioniq Hybrid Blue
Thanks: 1
Thanked 555 Times in 443 Posts
Quote:
Originally Posted by aerohead View Post
You need at least 20-mph.
Iíll do some tuft tests today on a back road area. Thankfully the back wheels of my car are at the very very back. Not much body left after the rear well like some other cars
  Reply With Quote
The Following User Says Thank You to Phase For This Useful Post:
aerohead (06-16-2022)
Old 06-16-2022, 06:06 PM   #348 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,797
Thanks: 7,806
Thanked 8,618 Times in 7,097 Posts
The bottom of the skirt will need to interface with the outer wall or fence of any difusser.

I propose that the solution will appear in the form of a skeg.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Two wrongs don't make a right, but three lefts do.
  Reply With Quote
Old 06-17-2022, 11:05 PM   #349 (permalink)
Master EcoModder
 
Phase's Avatar
 
Join Date: Mar 2022
Location: oregon
Posts: 1,067

Black Bullet - '19 Hyundai Ioniq Hybrid Blue
Thanks: 1
Thanked 555 Times in 443 Posts



quick tuft testing video. make sure to click the gear icon and crank the quality up to 5k resolution at 60 frames per second if your computer and internet can handle it!
  Reply With Quote
The Following 4 Users Say Thank You to Phase For This Useful Post:
aerohead (06-20-2022), blownb310 (11-06-2023), freebeard (06-17-2022), Joggernot (06-18-2022)
Old 06-17-2022, 11:55 PM   #350 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,797
Thanks: 7,806
Thanked 8,618 Times in 7,097 Posts
Thanks.

The tuft next to the bottom on the back of the skirt is unaffected until 16 seconds. The bottom one follows the edge of the skirt. Maybe a teardrop skirt that tapers in plan?

Next round might be shorter, more closely spaced in the back half of the test area.

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Two wrongs don't make a right, but three lefts do.
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com